Viewing archive of Saturday, 20 December 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 Dec 20 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 354 Issued at 0245Z on 20 Dec 2025 This report is compiled from data received at SWO on 19 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1535 1558 1608 M1.0
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic activity was at
quiet levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 118 SSN 033 Afr/Ap 004/006 X-ray Background B5.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.1e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.10e+08 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 1 1 1 2 2 2 Planetary 2 2 1 1 1 2 2 2
F. Comments
None.
All times in UTC
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Space weather facts
| Last X-flare | 2026/02/02 | X2.9 |
| Last M-flare | 2026/02/02 | M2.3 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 97 -27 |
| Last 30 days | 118.3 +3.5 |